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Directions

Pour 6 1/2 ounces of the orange juice into an ice cube tray and freeze until solid, approximately 2 hours. Store the remaining 2 ounces of juice and the zest in an airtight container in the refrigerator until ready to use.

In the carafe of a blender combine the frozen juice cubes, reserved orange juice and zest, milk, powdered sugar and vanilla, and blend until smooth and slushy, 30 to 45 seconds. Serve immediately.